Medicine: The Dangerous Last Puff

Ever since statistics began to point to some connection between
cigarette smoking and lung cancer, the world's tobacco industries have
been devising ways to cut down the effects of tars and nicotine. Last
week the Swedish tobacco monopoly settled on a fractions-of-an-inch
policy: the last puffs do more harm than the first. Testing 19 local
and 18 foreign brands, the Swedish Institute for People's Health found
that king-sized cigarettes give the smoker more tars and nicotine if
smoked to the same stub as a regular, much less than a regular if
smoked only for 1⅞ inches, the usual length of a...